CN204511904U - Strong self-priming anti-cavitation type double suction pump - Google Patents
Strong self-priming anti-cavitation type double suction pump Download PDFInfo
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- CN204511904U CN204511904U CN201520129622.4U CN201520129622U CN204511904U CN 204511904 U CN204511904 U CN 204511904U CN 201520129622 U CN201520129622 U CN 201520129622U CN 204511904 U CN204511904 U CN 204511904U
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- Prior art keywords
- suction
- pump
- inducer
- pump case
- main shaft
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- 239000000411 inducer Substances 0.000 claims abstract description 28
- 238000013022 venting Methods 0.000 claims abstract description 15
- 230000004888 barrier function Effects 0.000 claims description 12
- 230000001939 inductive effect Effects 0.000 claims description 3
- 238000010521 absorption reaction Methods 0.000 abstract description 8
- 230000003628 erosive effect Effects 0.000 abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 21
- 230000006698 induction Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008676 import Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000000875 corresponding effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses a kind of strong self-priming anti-cavitation type double suction pump, comprise pump case, main shaft and main impeller, it is characterized in that the suction port of described main impeller is provided with inducer, described main impeller and described inducer and described main shaft are coaxially arranged, be fixed with seal ring at the suction port of described pump case, forming between described seal ring and described inducer has pressure chamber; Be provided with by the venting gas appliance of described main shaft drives in described pump case one end, described venting gas appliance is connected with the suction means being arranged at described pump case tip exterior, described suction means comprises the sucking pipe and one-way exhaust pipe that are interconnected, described sucking pipe is communicated with described pump case inside, and described one-way exhaust pipe is connected with described venting gas appliance through flexible pipe.The utility model has the advantages that, this double suction pump can realize self-absorption function without the need to increasing power in addition, and suction journey is higher, double suction pump main impeller suction port is provided with aerofoil profile inducer simultaneously, thus reduces the generation of cavitation erosion.
Description
Technical field
The utility model relates to water pump, is specifically related to a kind of strong self-priming anti-cavitation type double suction pump.
Background technique
Part double suction pump is because of reasons such as engineering cost, and that is designed by water pump Installation Elevation is higher, and usually to adopt be vacuum suction, water filling drainage way to be to start water pump.It is all inherently utilize barometric pressure to the pressure of water that these two kinds of modes are run, and realizes water pump and normally runs.But do not eliminate the negative pressure that water pump increases import of water pump impeller place under suction enters operating mode essentially, the cavitation of that is failing to suppress import of water pump impeller place produces, in addition due to bleed and water filling drainage all need additional corresponding two kinds of equipment, when these two kinds of mode auxiliary water pumps start simultaneously, the time needed is longer, therefore has strict restriction to the common water pump of air exhausting type drainage, water filling type drainage conventional pump under many occasions.The suction head of common self-priming pump, all below 4 meters, can not meet and inhale the high usage requirement of journey.Under the prerequisite of failing to limit cavitation generation, pump cavitation produces and is difficult to avoid, and wherein impeller cavitation is stood in the breach, and often makes because of the cavitation of impeller unit normally not run, causes shutdown overhaul.
Summary of the invention
The purpose of this utility model is according to above-mentioned the deficiencies in the prior art part, a kind of strong self-priming anti-cavitation type double suction pump is provided, this double suction pump makes to enter double suction pump medium by arranging inducer before the suction port of main impeller keeps certain pressure, thus reduces the generation of cavitation erosion; On double suction pump, be provided with suction-exhaust device simultaneously, utilize the motivational drive of double suction pump itself, thus realize the self-absorption function of double suction pump, without the need to increasing power in addition.
The utility model object realizes being completed by following technological scheme:
A kind of strong self-priming anti-cavitation type double suction pump, comprise pump case, main shaft and main impeller, it is characterized in that the suction port of described main impeller is provided with inducer, described main impeller and described inducer and described main shaft are coaxially arranged, be fixed with seal ring at the suction port of described pump case, forming between described seal ring and described inducer has pressure chamber; Be provided with by the venting gas appliance of described main shaft drives in described pump case one end, described venting gas appliance is connected with the suction means being arranged at described pump case tip exterior, described suction means comprises the sucking pipe and one-way exhaust pipe that are interconnected, described sucking pipe is communicated with described pump case inside, and described one-way exhaust pipe is connected with described venting gas appliance through flexible pipe.
The quantity of described sucking pipe is two.
By inducing flat key spacing between described main shaft and described inducer, spacing by main flat key between described main shaft and described main impeller.
The Hand of spiral of described inducer is identical with the Hand of spiral of described main impeller.
Described venting gas appliance comprises eccentric wheel, connecting rod, cavity, outlet valve and suction valve, described inside cavity is divided into upper cavity and lower chamber through barrier film, wherein said eccentric wheel is connected with described spindle, be connected with described eccentric wheel bottom described connecting rod, described connecting rod top is fixedly connected with described barrier film, described barrier film is provided with intervening vaive, and described outlet valve is arranged at the exhaust ports of described lower chamber, and described suction valve is arranged at the suction port place of described upper cavity.
The utility model has the advantages that, add drainage gas outlet means at double suction pump intake, utilize the motivational drive of pump itself, do not need to increase power in addition, just can realize the self-absorption function of double suction pump; And the suction journey of pump is high, suction lift can reach 7 meters; Suct speed fast, realized sucting function within 2 minutes; Add aerofoil profile inducer before this external double suction pump main impeller suction port, to medium pressurization, make the medium entering double suction pump keep certain pressure, thus reduce the generation of cavitation, add the life cycle of double suction pump.
Accompanying drawing explanation
Fig. 1 is double suction pump plan view in the utility model;
Fig. 2 is double suction pump side view in the utility model;
Fig. 3 is the partial enlarged drawing at A place in the utility model Fig. 1.
Embodiment
Feature of the present utility model and other correlated characteristic are described in further detail by embodiment below in conjunction with accompanying drawing, so that the understanding of technician of the same trade:
Be respectively as marked 1-18 in Fig. 1-3, figure: main shaft 1, induction flat key 2, inducer 3, main flat key 4, seal ring 5, main impeller 6, eccentric wheel 7, connecting rod 8, outlet valve 9, lower chamber 10, barrier film 11, upper cavity 12, intervening vaive 13, suction valve 14, pipeline 15, outlet pipe 16, outlet pipe 17, one-way exhaust pipe 18.
Embodiment: the present embodiment is specifically related to a kind of strong self-priming anti-cavitation type double suction pump, want the speed effectively improving starting mode of pump, reduce the usage space of attached starting equipment in main pump installation site, the drainage gas outlet means of water pump and main pump is just needed to make same entirety, realize the self-absorption function of double suction pump, to reach convenient, effective, reliable object; Also must reduce the cavitation of double suction pump, the steam bubble effectively must suppressing water pump vane suction port medium produces simultaneously.Therefore in the present embodiment, double suction pump makes to enter the medium maintenance certain pressure of double suction pump by arranging inducer before the suction port of main impeller, thus reduces the generation of cavitation erosion; On double suction pump, be provided with suction-exhaust device simultaneously, utilize the motivational drive of double suction pump itself, thus realize the self-absorption function of double suction pump, without the need to increasing power in addition.
As shown in Figure 1, in the present embodiment, double suction pump comprises pump case, main shaft 1 and main impeller 6, be connected through main flat key 4 is spacing between main impeller 6 with main shaft 1, the inducer 3 of Airfoil Design is provided with in the suction port position of main impeller 6, inducer 3 is same, and through inducing, flat key 2 is spacing to be connected with between main shaft 1, be fixed with seal ring 5 at the suction port place of pump case, between seal ring 5 isogeneous induction wheel 3, composition has pressure chamber; Wherein main impeller 6 and inducer 3 are coaxially arranged with main shaft 1, and the Hand of spiral of inducer 3 is identical with the Hand of spiral of main impeller 6.The object arranging inducer 3 in the suction port position of main impeller 6 is to eliminate impeller cavitation erosion, its method of work is: dynamic torque is passed to induction flat key 2 by the main shaft 1 of double suction pump, dynamic torque is reached inducer 3 by induction flat key 2 again, and inducer 3 will make synchronous axial system together along with main shaft 1; Adopt the inducer 3 of the wing Design with Rule medium flowed through can be accelerated, after producing the pressure of 0.045MPa----0.065MPa, medium enters in the suction port of the main impeller 6 driven by main flat key 4 again, what have the medium of precompressed to form at inducer 3 and seal ring 5 has pressure chamber, ensure that the pressure medium that inducer 3 produces can effectively enter in main impeller 6, thus ensure that main impeller 6 can not produce cavitation erosion.
As Figure 1-3, the non-shaft stretching end of main shaft 1 is equipped with suction-exhaust device, this suction-exhaust device comprises the suction means being positioned at pump case tip exterior and the venting gas appliance being positioned at pump case one end, this venting gas appliance is connected through pipeline 15 with suction means, wherein, suction means comprises outlet pipe 16, outlet pipe 17 and one-way exhaust pipe 18, outlet pipe 16 is communicated with the inside of pump case respectively with the suction end of outlet pipe 17, and both exhaust ends are connected with one-way exhaust pipe 18, one-way exhaust pipe 18 is then connected with the venting gas appliance being positioned at pump case one end through pipeline 15; Venting gas appliance comprises eccentric wheel 7, connecting rod 8, cavity, outlet valve 9 and suction valve 14, eccentric wheel 7 and main shaft 1 are in transmission connection, the bottom of connecting rod 8 is connected with eccentric wheel 7, its top is fixed with barrier film 11, and this barrier film 11 is arranged in cavity and cavity is divided into upper cavity 12 and lower chamber 10, and barrier film 11 is provided with intervening vaive 13, wherein, outlet valve 9 is arranged at the exhaust ports of lower chamber 10, and suction valve is then arranged at the suction port place of upper cavity 12, namely with the connection mouth place of pipeline 15.The object that double suction pump arranges suction-exhaust device is the motivational drive utilizing double suction pump itself, thus realize the self-absorption function of double suction pump, without the need to increasing power in addition, its method of work is: main shaft 1 operates, band movable eccentric wheel 7 and connecting rod 8 move, to promote barrier film 11 to-and-fro motion in cavity; Air in pump case enters upper cavity 12 by outlet pipe 16 and 17 → one-way exhaust pipe, 18 → suction valve 14, and the gas pressure in upper cavity 12 makes intervening vaive 13 open, and gas enters lower chamber 10, is discharged by gas by outlet valve 9; Barrier film 11 to-and-fro motion, constantly discharges gas, until by gas emptying in double suction pump, forms negative pressure in pump case, the water of water inlet pool is sucked the pump housing, achieves the self-absorption function of double suction pump.
In the present embodiment, compared under the running state utilizing common self-priming pump, not only accelerate water pump and start shipment speed, the reliability of water pump operation is made to have had basic assurance, simultaneously due to the embodiment of the strong self-absorption function of this product, water pump suction line is comparatively simple, without assisting agencies such as safety check, thus water pump suction port pipe damages less, has higher to suct ability.Relative to the common material mode of cavitation-resistance that utilizes to reduce pump cavitation, just by the lifting of material, extend the working life of double suction pump, the method is DeGrain not only, and anti-cavitation material manufacture cost is higher, and cavitation can not be eliminated.Part occasion, due to the particularity of medium, also cannot use the material that anti-cavitation performance is strong.
Claims (5)
1. one kind strong self-priming anti-cavitation type double suction pump, comprise pump case, main shaft and main impeller, it is characterized in that the suction port of described main impeller is provided with inducer, described main impeller and described inducer and described main shaft are coaxially arranged, be fixed with seal ring at the suction port of described pump case, forming between described seal ring and described inducer has pressure chamber; Be provided with by the venting gas appliance of described main shaft drives in described pump case one end, described venting gas appliance is connected with the suction means being arranged at described pump case tip exterior, described suction means comprises the sucking pipe and one-way exhaust pipe that are interconnected, described sucking pipe is communicated with described pump case inside, and described one-way exhaust pipe is connected with described venting gas appliance through pipeline.
2. one according to claim 1 strong self-priming anti-cavitation type double suction pump, is characterized in that the quantity of described sucking pipe is two.
3. one according to claim 1 strong self-priming anti-cavitation type double suction pump, is characterized in that by inducing flat key spacing between described main shaft and described inducer, spacing by main flat key between described main shaft and described main impeller.
4. one according to claim 1 strong self-priming anti-cavitation type double suction pump, is characterized in that the Hand of spiral of described inducer is identical with the Hand of spiral of described main impeller.
5. one according to claim 1 strong self-priming anti-cavitation type double suction pump, it is characterized in that described venting gas appliance comprises eccentric wheel, connecting rod, cavity, outlet valve and suction valve, described inside cavity is divided into upper cavity and lower chamber through barrier film, wherein said eccentric wheel is connected with described spindle, be connected with described eccentric wheel bottom described connecting rod, described connecting rod top is fixedly connected with described barrier film, described barrier film is provided with intervening vaive, described outlet valve is arranged at the exhaust ports of described lower chamber, and described suction valve is arranged at the suction port place of described upper cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520129622.4U CN204511904U (en) | 2015-03-06 | 2015-03-06 | Strong self-priming anti-cavitation type double suction pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520129622.4U CN204511904U (en) | 2015-03-06 | 2015-03-06 | Strong self-priming anti-cavitation type double suction pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204511904U true CN204511904U (en) | 2015-07-29 |
Family
ID=53709887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520129622.4U Expired - Fee Related CN204511904U (en) | 2015-03-06 | 2015-03-06 | Strong self-priming anti-cavitation type double suction pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204511904U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108167231A (en) * | 2016-12-07 | 2018-06-15 | 青岛海尔洗衣机有限公司 | A kind of pulsating pump and washing machine |
| CN108825506A (en) * | 2018-05-24 | 2018-11-16 | 陕西科技大学 | It is not easy to be washed in the level of abrasion and opens horizontal double sucking pump |
| CN108869306A (en) * | 2018-05-24 | 2018-11-23 | 陕西科技大学 | Horizontal double sucking pump is opened in double containment level |
-
2015
- 2015-03-06 CN CN201520129622.4U patent/CN204511904U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108167231A (en) * | 2016-12-07 | 2018-06-15 | 青岛海尔洗衣机有限公司 | A kind of pulsating pump and washing machine |
| CN108167231B (en) * | 2016-12-07 | 2020-09-04 | 青岛胶南海尔洗衣机有限公司 | Water suction pump and washing machine |
| CN108825506A (en) * | 2018-05-24 | 2018-11-16 | 陕西科技大学 | It is not easy to be washed in the level of abrasion and opens horizontal double sucking pump |
| CN108869306A (en) * | 2018-05-24 | 2018-11-23 | 陕西科技大学 | Horizontal double sucking pump is opened in double containment level |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150729 |
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| CF01 | Termination of patent right due to non-payment of annual fee |